Final answer:
An HDD (Hard Disk Drive) is a device that uses rigid magnetic materials for data storage, employing technologies like giant magnetoresistance for reading and writing data.
Step-by-step explanation:
The device that stores data on rigid magnetic material is the HDD (Hard Disk Drive). HDDs use spinning disks coated with a magnetic material to magnetically encode information, a technology that has seen advancements like giant magnetoresistance. This effect uses thin films of alternating ferromagnetic and nonmagnetic layers, discovering significant changes in resistance when a magnetic field is applied, which is critical for reading and writing data.
Ferromagnetic materials found in hard disk drives act as spin valves with alternating layers that respond to magnetic fields, enabling permanent data storage. The movement and the magnetic fields associated with the read and write process of HDDs are key concepts in the functionality of modern digital storage devices.
A device that stores data on rigid magnetic material is a HDD (Hard Disk Drive). A hard disk drive uses magnetism to store and retrieve data. The data is written on a coated, spinning disk, and is read and written to the disk using a thin stylus. The technique used in hard disk drives is known as giant magnetoresistance, which is the effect of a large change in electrical resistance induced by an applied magnetic field to thin films of alternating ferromagnetic and nonmagnetic layers.